Very fine sapphire and diamond ring

The cushion-shaped sapphire weighing 10.96 carats, claw-set between demi-lune diamond shoulders, size 52.

Accompanied by SSEF report no. 68900, stating that the cushion-shaped sapphire weighing 10.96 carats and measuring 13.82 x 11.93 x 7.64mm, is of Kashmir origin, with no indications of heating, together with an appendix letter expressing the exceptional quality of this sapphire. Also accompanied by Gübelin report no. 13067099, stating that the cushion-shaped sapphire weighing 10.96 carats and measuring 13.83 x 11.94 x 7.63mm, is of Kashmir origin, with no indications of heating, together with an appendix letter expressing the rarity of unheated sapphires. Stamped PT950 for platinum. Sapphire blue of medium strong saturation, clean to the naked eye, of velvety appearance; for further information on the stone, please refer to the gemmological reports. Diamonds estimated to weigh a total of approximately 1.40 carat, on average G - H colour, VS clarity, as gauged and graded in mounting. Little signs of wear to the metal. In very good condition. Gross weight approximately 8 grams.
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Please note that colour, clarity and weight of gemstones are statements of opinion only and not statements of fact by Sotheby's. We do not guarantee, and are not responsible for any certificate from a gemological laboratory that may accompany the property. We do not guarantee that watches are in working order. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective, qualified opinion. Prospective buyers should also refer to refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue, in particular to the Notice regarding the treatment and condition of gemstones and to the Notice regarding import of Burmese jadeite and rubies into the US.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD "AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE."

"The velvety blue of this sapphire is due to very fine and subtle inclusions and a combination of well-balanced trace elements in the gemstone, typical and characteristic for the finest sapphires of Kashmir," SSEF appendix letter, 26 June 2013.